Dynamically set entry fields based on linked entry
Suppose I have a library "Things I've watched", fields are a time and a relationship to another library. Depending on which entry is chosen for the relationship, other fields should be allowed for entries to the library. E.g. If I select "TV" as the linked entry, I would like "Season" as a field, which I wouldn't want if I had selected "Movie"
Bill Crews commented
Edit library, select Season field, go to bottom, Dependencies, add (+) a dependency on the link field to be visible only when the link field is "TV".